This document discusses the differences between simulation and synthesis in Verilog design. It defines simulation as modeling the behavior of a design for verification purposes, while synthesis is the process of converting Verilog code into an optimized gate-level representation for implementation. The document outlines synthesizable and non-synthesizable Verilog constructs, noting that only a subset of constructs can be synthesized, including registers, always blocks, and assign statements but excluding initial blocks, real data types, and system tasks.
FregeDay: Design and Implementation of the language (Ingo Wechsung)Dierk König
Talk by Ingo Wechsung at the FregeDay 2015, Sept 11th, Basel, Switzerland, covering general characteristics of the language, history, and important design decisions.
FregeDay: Roadmap for resolving differences between Haskell and Frege (Ingo W...Dierk König
Diskusssion of what kind of differences there are between Haskell 2010 and Frege, how difficult they are to resolve, what their impact is, and what to do about them. Also: how to allow essential differences that will never work outside the JVM and demarcate them from supposed-to-be vanilla Haskell.
The PDF contains one of the six parts to learn Verilog in the simplest possible way.
It contains notes of first three chapters of the reference book Verilog HDL by Samir Palnitkar
Notes: Verilog Part 4- Behavioural ModellingJay Baxi
This is the 4th part of the Verilog HDL notes prepared from Verilog HDL by Samir Palnitkar .
It contains a broad view on behavioural modelling the second most frequently used level of abstraction needed for designing of sequential circuits.
Notes: Verilog Part 5 - Tasks and FunctionsJay Baxi
The document is the penultimate part of Verilog notes out of 6 total parts.
This contains brief theoretical points on Tasks and Functions, their differences, declaration and invocation and their types and applications.
Notes: Verilog Part 2 - Modules and Ports - Structural Modeling (Gate-Level M...Jay Baxi
The Notes Verilog Part 2 includes the notes and keypoints of a reference book "Verilog HDL by Samir Palnitkar.
This is the second part out of the total six parts.
FregeDay: Design and Implementation of the language (Ingo Wechsung)Dierk König
Talk by Ingo Wechsung at the FregeDay 2015, Sept 11th, Basel, Switzerland, covering general characteristics of the language, history, and important design decisions.
FregeDay: Roadmap for resolving differences between Haskell and Frege (Ingo W...Dierk König
Diskusssion of what kind of differences there are between Haskell 2010 and Frege, how difficult they are to resolve, what their impact is, and what to do about them. Also: how to allow essential differences that will never work outside the JVM and demarcate them from supposed-to-be vanilla Haskell.
The PDF contains one of the six parts to learn Verilog in the simplest possible way.
It contains notes of first three chapters of the reference book Verilog HDL by Samir Palnitkar
Notes: Verilog Part 4- Behavioural ModellingJay Baxi
This is the 4th part of the Verilog HDL notes prepared from Verilog HDL by Samir Palnitkar .
It contains a broad view on behavioural modelling the second most frequently used level of abstraction needed for designing of sequential circuits.
Notes: Verilog Part 5 - Tasks and FunctionsJay Baxi
The document is the penultimate part of Verilog notes out of 6 total parts.
This contains brief theoretical points on Tasks and Functions, their differences, declaration and invocation and their types and applications.
Notes: Verilog Part 2 - Modules and Ports - Structural Modeling (Gate-Level M...Jay Baxi
The Notes Verilog Part 2 includes the notes and keypoints of a reference book "Verilog HDL by Samir Palnitkar.
This is the second part out of the total six parts.
Partial Continuations, Lessons From JavaScript and Guile in 2012 (Quasiconf 2...Igalia
By Andy Wingo.
Three talks in one:
- The power of limits: Partial continuations in Scheme
- Postcards from the web: Lessons from JavaScript
- Guile in 2012: A look back at 2.0, a look forward to 2.2
The power of limits: Partial continuations in Scheme
I’ll describe what delimited continuations are, how they are better than call/cc, and then go on to demonstrate and describe an event-based cooperative threading system built with delimited continuations, showing how it makes for much clearer code. I’ll show a simple implementation of the memcached protocol.
Postcards from the web: Lessons from JavaScript
In this talk I will mention some things that I have learned about language implementations from having worked on V8 and JavaScriptCore.
Guile in 2012: A look back at 2.0, a look forward to 2.2
It will briefly summarize the 2.0 release series of Guile, how it went, what worked well and what didn’t. Then we’ll look forward to the next cycle, which is probably some 6 months away.
(chapter 2) A Concise and Practical Introduction to Programming Algorithms in...Frank Nielsen
These are the slides accompanying the textbook:
A Concise and Practical Introduction to Programming Algorithms in Java
by Frank Nielsen
Published by Springer-Verlag (2009), Undergraduate textbook in computer science (UTiCS series)
ISBN: 978-1-84882-338-9
http://www.lix.polytechnique.fr/~nielsen/JavaProgramming/
http://link.springer.com/book/10.1007%2F978-1-84882-339-6
Presentation of Lambda in Java 8 for the Hanoi Java User Group on Thursday, April 16, 2015
http://www.meetup.com/Hanoi-Java-User-Group/events/220963110/
CETPA INFOTECH PVT LTD is one of the IT education and training service provider brands of India that is preferably working in 3 most important domains. It includes IT Training services, software and embedded product development and consulting services.
Partial Continuations, Lessons From JavaScript and Guile in 2012 (Quasiconf 2...Igalia
By Andy Wingo.
Three talks in one:
- The power of limits: Partial continuations in Scheme
- Postcards from the web: Lessons from JavaScript
- Guile in 2012: A look back at 2.0, a look forward to 2.2
The power of limits: Partial continuations in Scheme
I’ll describe what delimited continuations are, how they are better than call/cc, and then go on to demonstrate and describe an event-based cooperative threading system built with delimited continuations, showing how it makes for much clearer code. I’ll show a simple implementation of the memcached protocol.
Postcards from the web: Lessons from JavaScript
In this talk I will mention some things that I have learned about language implementations from having worked on V8 and JavaScriptCore.
Guile in 2012: A look back at 2.0, a look forward to 2.2
It will briefly summarize the 2.0 release series of Guile, how it went, what worked well and what didn’t. Then we’ll look forward to the next cycle, which is probably some 6 months away.
(chapter 2) A Concise and Practical Introduction to Programming Algorithms in...Frank Nielsen
These are the slides accompanying the textbook:
A Concise and Practical Introduction to Programming Algorithms in Java
by Frank Nielsen
Published by Springer-Verlag (2009), Undergraduate textbook in computer science (UTiCS series)
ISBN: 978-1-84882-338-9
http://www.lix.polytechnique.fr/~nielsen/JavaProgramming/
http://link.springer.com/book/10.1007%2F978-1-84882-339-6
Presentation of Lambda in Java 8 for the Hanoi Java User Group on Thursday, April 16, 2015
http://www.meetup.com/Hanoi-Java-User-Group/events/220963110/
CETPA INFOTECH PVT LTD is one of the IT education and training service provider brands of India that is preferably working in 3 most important domains. It includes IT Training services, software and embedded product development and consulting services.
CETPA INFOTECH PVT LTD is one of the IT education and training service provider brands of India that is preferably working in 3 most important domains. It includes IT Training services, software and embedded product development and consulting services.
http://www.cetpainfotech.com
Presentation done at the historic 20 yeras of C++ conference in Las Vegas 2005. This is also the first time I ever spoke on the topic of combing generative programming and C++ template metaprogramming
CETPA INFOTECH PVT LTD is one of the IT education and training service provider brands of India that is preferably working in 3 most important domains. It includes IT Training services, software and embedded product development and consulting services.
This presentation illustrates how to use Sparx Enterprise Architect Parametric Model features found in the Systems Engineering and Ultimate editions to simulate queuing systems.
How to create SystemVerilog verification environment?Sameh El-Ashry
Basic knowledge for the verification engineer to learn the art of creating SystemVerilog verification environment.
Starting from the specifications extraction till coverage closure.
Speaker: Cat Gurinsky
Abstract: How often do you find yourself doing the same set of commands when troubleshooting issues in your network? I am willing to bet the answer to this is quite often! Usually we have a list of our favorite commands that we will always use to quickly narrow down a specific problem type. Switch reloaded unexpectedly? "show reload cause" Fan failure? "show environment power" Fiber link reporting high errors or down on your monitoring system? "show interface counters errors", "show interface transceiver", "show interface Mac detail" Outputs like the above examples help you quickly pinpoint the source of your failures for remediation. SSH'ing into the boxes and running these commands by hand is time consuming, especially if you are for example a NOC dealing with numerous failures throughout the day. Most switch platforms have API's now and you can instead program against them to get these outputs in seconds. I will go over a variety of examples and creative ways to use these scripts for optimal use of your troubleshooting time and to get you away from continually doing these repetitive tasks by hand. NOTE: My tutorial examples will be using python and the Arista pyeapi module with Arista examples, but the concepts can easily be transferred to other platforms and languages.
CETPA INFOTECH PVT LTD is one of the IT education and training service provider brands of India that is preferably working in 3 most important domains. It includes IT Training services, software and embedded product development and consulting services.
http://www.cetpainfotech.com
From Zero to Streaming Healthcare in Production (Alexander Kouznetsov, Invita...confluent
Invitae is one of the fastest growing genetic information companies, whose mission is to bring comprehensive genetic information into mainstream medical practice to improve the quality of healthcare for billions of people. We have recently partnered with another lab, requiring an integration layer that was developed as part of a dizzying leap from a traditional Python service architecture to Scala Streaming applications on Kafka and Kubernetes. This presentation is our story, where we discuss challenges and solutions, error handling and resilience techniques, technology stack choices and compromises, tools and approaches we have developed, and general insights. Beyond engineering itself, our team's goal is enabling others to join in. Building an application entirely of Streams is a significant and in many ways liberating paradigm shift. In addition to learning to architect and understand how the application will behave and evolve, success depends on great tooling. We will show, for example, how we extended KStreams API to seamlessly include Avro Schema as part of our build and code infrastructure, completely automating SerDe derivation, introducing typed topics, and still supporting polyglot teams. Other highlights: - Self-healing streams with aggregation, and deciding when to crash - Connectors vs Streams for side effects - Scheduling with Streams - Deriving topology diagrams - Monitoring and metrics as Streams - Combining Avro, Swagger and code generation, plus avro4s vs avrohugger comparison - Typelevel Cats and its role in our success - http4s and hybrid testing
1. Click to add Title
Simulation vs Synthesis Synthesizable and
Non-Synthesizable Construct
Jatin Adroja
Keval Vaishnav
Nilesh Ramani
e-Infochips Institute of Training Research and Academics Limited
2. 2
Outlines
Introduction to Simulation & Synthesis
1
Simulation vs Synthesis
2
Sinthesizable Construct in Verilog
3
Non-Synthesizable Construct in verilog
4
3. Introduction to Simulation
●
What is simulation?
Process of creating models to that mimic the behaviour of the
device
●
Why Simulation is required?
To verify the code & gate level design
3
4. Introduction to Synthesis
●
What is synthesis?
Process of converting high level description of design into
an optimized gate-level representation.
●
Why Synthesis is required?
To convert RTL code into gate level design
4
5. Simulation vs Synthesis
There are two kinds of simulation
1- behavioural (functional) simulation which is done pre-
synthesis
2- Timing simulation which is done post-synthesis to ensure
that it has achieved the required timing.
5
Pre-Synthesis
Simulation
Synthesis
Post-Synthesis
Simulation
9. What is Synthesizable?
●
Combine things to make a whole...
●
Ex. You read many books and combine them all the
information into the one report.
●
Ex. Electronic keyboard produce the sound of drum and
violin this is example of a case where the keyboard
synthesize the instruments.
9
10. Synthesizable
●
Verilog allows several ways to describe one thing, Synthesis
tools often require only a limited subset of constructs;
●
Example: R
●
Registers and Flip Flops must be described in a certain
way
10
11. How can i know if my code is synthesizable [verilog]?
●
Structural verilog typically means you are creating
description close to a netlist and the constructs you would
use in this case are a small subset of those that are
synthesizable.
●
Structural , Behaviour are non-synthesizable
●
However, these two model can simulate........???
●
Behaviour Models : Higher level of modelling where
behaviour of logic is modelled
●
RTL Models : Logic is modelled at register level
●
Structural Models : Logic is modelled at both register level
and gate level.
11
12. Construct Supported in Synthesis
12
no Construct Type Keyword or Description note
1 ports Input,inout,output Input only IO level
2 parameters parameter This makes design more
generic
3 module definition module
4 signals and
variables
wire, reg, tri Vectors are allowed
5 instantiation module instances /
primitive gate instances
E.g.- nand (out,a,b), bad idea to
code RTL this way.
6 function and
tasks
function , task Timing constructs ignored
13. Construct Supported in Synthesis
13
no Construct Type Keyword or Description note
7 procedural always, if, else, case,
casex, casez
initial is not supported
8 procedural blocks begin, end, named
blocks, disable
Disabling of named blocks
allowed
9 data flow assign Delay information is ignored
10 named Blocks disable Disabling of named block
supported.
11 loops for, while, forever While and forever loops must
contain @(posedge clk) or
@(negedge clk)
14. Construct not Supported in Synthesis
14
Construct Type Notes
initial Used only in test benches.
events Events make more sense for syncing
test bench components.
real Real data type not supported.
time Time data type not supported.
force and release Force and release of data types not
supported.
fork join Use non-blocking assignments to get
same effect.
primitives Only gate level primitives are
supported.
table UDP and tables are not supported.
15. Non Synthesizable verilog Construct
●
The verilog code which contains non-synthesizable elements
can be defined as non synthesizable verilog constructs.
15
16. Non Synthesizable element
●
Basic :–
System tasks :- $display
$random
$monitor
real constants :- floating point numbers,
●
Data-types :–
Real :- ::= real < list of reg >, floating point operations,
Time :- Time quantities in i.e. $time
Event :- wait event
●
Modual instances :– Delay on built in gate
16
17. Non Synthesizable element
●
Primitives :–
UDPs, pullup, pulldown, pmos, nmos, cmos, rpmos, etc
●
Reduction Operations :-
'===' :- concider 'x' and 'z' values
' !== ' :- notconcider 'x' and 'z' values
% :- module,
/ :- division
●
Event control :-
Event trigger ( -> ), Delay and wait ( # )
17
18. Non Synthesizable element
●
Continuous assignments :-
using delay :- delay is not synthesizable.
●
Procedural blocks :-
initial :- start execution at time zero.
●
Procedural statements :-
fork – join :- parallel execution cause RASE condition.
●
Procedural assignments :-
assign – deassign :- used to model in combinational logic.
18